inogen

== English == === Etymology === From Ancient Greek ἴς (ís, “power, muscle”) + -gen. === Noun === inogen (uncountable) (organic chemistry, obsolete) A complex nitrogenous substance formerly hypothesized to be continually decomposed and reproduced in the muscles during life. === References === “inogen”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC. === Anagrams === gone in